gcc/testsuite/gcc.target/i386/funcspec-3.c

   1 /* Test whether using target specific options, we can generate popcnt by
   2    setting the architecture.  */
   3 /* { dg-do compile } */
   4 /* { dg-require-effective-target lp64 } */
   5 /* { dg-options "-O2 -march=k8" } */
   6
   7 extern void exit (int);
   8 extern void abort (void);
   9
  10 #define SSE4A_ATTR __attribute__((__option__("arch=amdfam10")))
  11 #define SSE42_ATTR __attribute__((__option__("sse4.2")))
  12
  13 static int sse4a_pop_i (int a) SSE4A_ATTR;
  14 static long sse42_pop_l (long a) SSE42_ATTR;
  15 static int generic_pop_i (int a);
  16 static long generic_pop_l (long a);
  17
  18 static
  19 int sse4a_pop_i (int a)
  20 {
  21   return __builtin_popcount (a);
  22 }
  23
  24 static
  25 long sse42_pop_l (long a)
  26 {
  27   return __builtin_popcountl (a);
  28 }
  29
  30 static
  31 int generic_pop_i (int a)
  32 {
  33   return __builtin_popcount (a);
  34 }
  35
  36 static
  37 long generic_pop_l (long a)
  38 {
  39   return __builtin_popcountl (a);
  40 }
  41
  42 int five = 5;
  43 long seven = 7;
  44
  45 int main ()
  46 {
  47   if (sse4a_pop_i (five) != 2)
  48     abort ();
  49
  50   if (sse42_pop_l (seven) != 3L)
  51     abort ();
  52
  53   if (generic_pop_i (five) != 2)
  54     abort ();
  55
  56   if (generic_pop_l (seven) != 3L)
  57     abort ();
  58
  59   exit (0);
  60 }
  61
  62 /* { dg-final { scan-assembler "popcntl" } } */
  63 /* { dg-final { scan-assembler "popcntq" } } */
  64 /* { dg-final { scan-assembler "call\t(.*)sse4a_pop_i" } } */
  65 /* { dg-final { scan-assembler "call\t(.*)sse42_pop_l" } } */
  66 /* { dg-final { scan-assembler "call\t(.*)popcountdi2" } } */